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Diethylene Triamine Pentaacetic Acid (DTPA) CAS No.: 67-43-6                                  EINECS 200-652-8 Molecular Formula: C14H23N3O10                   Molecular Weight: 393.35 Structural Formula:                           Propery:  DTPA is a chelating agent that sequesters metal ions. Thus, DTPA cannot combine with other ingredients in a product.Specification: Item Index AppearanceWhite crystalline powderAssay=99%Colority=250APHASpecific gravity:1.3Bulk density1300kg/m3PH value(1% of the solution):2.1-2.5Chelated value250-254 mg CaCO3/gAsh:=0.2%.Water=0.3%Iron(Fe)=0.001%Heavy metals